| Merthyr Tudful to Naugatuck (Connecticut) | 3,251.06 mi (5,232.07 km) |
| Merthyr Tudful to Navarre (Florida) | 4,335.52 mi (6,977.34 km) |
| Merthyr Tudful to Nederland (Texas) | 4,647.71 mi (7,479.76 km) |
| Merthyr Tudful to Neenah (Wisconsin) | 3,744.33 mi (6,025.92 km) |
| Merthyr Tudful to Neosho (Missouri) | 4,316.19 mi (6,946.24 km) |
| Merthyr Tudful to Nesconset (New York) | 3,282.36 mi (5,282.45 km) |
| Merthyr Tudful to New Albany (Indiana) | 3,909.88 mi (6,292.34 km) |
| Merthyr Tudful to New Albany (Ohio) | 3,707.00 mi (5,965.84 km) |
| Merthyr Tudful to New Baltimore (Michigan) | 3,588.93 mi (5,775.83 km) |
| Merthyr Tudful to New Baltimore (Virginia) | 3,561.58 mi (5,731.81 km) |
| Merthyr Tudful to New Bedford (Massachusetts) | 3,156.68 mi (5,080.19 km) |
| Merthyr Tudful to New Berlin (Wisconsin) | 3,784.99 mi (6,091.36 km) |
| Merthyr Tudful to New Bern (North Carolina) | 3,701.99 mi (5,957.77 km) |
| Merthyr Tudful to New Braunfels (Texas) | 4,825.52 mi (7,765.92 km) |
| Merthyr Tudful to New Brighton (Minnesota) | 3,878.74 mi (6,242.22 km) |
